Bf and porn

Just saw my bfs phone history and there's so much porn. And we talked about it before. He knows I don't like it. What the hell do I do? I'm having a panic attack, I can't stop crying, I feel like shit.

Also another thing about my bf, he's asked me to have a three some before, and I am a firm no. And his brothers gf wants her and his brother to have a three some. His brother isn't into it. But I feel like my bf is now like jealous because his brother has a gf who actually wants to do it. And I just feel like dying.